Recent content by so09er

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[SOLVED] Torque and angular momentum for a Particle in a Force Field Find A) the torque and B) the angular momentum about the origin at the time t=3 for a particle in a Force Field F=(3t^2 -4t)i + (12t -6)j + (6t - 12t^2)k. Assuming that t=0 is located at the origin. I equated r"=F then...

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[SOLVED] Heisenberg Uncertainty Principle question Suppose that the x-compenent of the velocity of a 3.0 x 10^-4 kg mass is measured to an accuracy of plus or minus 10^-6 m/s. What then is the limit of the accuracy with which we can locate the particle along the x-axis? Any help on where to...

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[SOLVED] Absorption of Photons question Radiation of equal intensities of 0.3 A X-rays (Ua=0.3 1/mm) and 0.5 A x-rays (Ub=.72 1/mm) are incident on a material. Find the thickness of the material if, in the emerging radiation, the 0.3 A x-rays are twice as intense as the 0.5 A x-rays. The...

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[SOLVED] Compton Effect question A 125 keV photon scatters from a free electron initially at rest. Find the recoil velocity of the electron if the photon scattering angle is 180 degrees. (Use energy and momentum conservation.) Am lost at where to go on this problem, thanks for any help...